Suppose Earth's atmosphere had no greenhouse gases. Then Earth's average surface temperature would be
A) 250 K, which is well below freezing.
B) 273 K, or about the freezing point for water.
C) 283 K, or about 5 K cooler than it is now.
D) 288 K, or about the same as it is now.
E) 293 K, or about 5 K warmer than it is now.
Question 2
Mars' magnetic field is so weak because
A) it spins much slower than Earth does.
B) it core may no longer be molten.
C) its core contains less iron than our own.
D) Both B and C are probable.
E) All of the above are correct.
The monthly changes of angle between the direction of illumination by the Sun and viewing from Earth
A Piece of Mars on Earth
The hypothalamus helps regulate body temperature.
Bidirectional Thumb Pressure on Plantar Surface. Apply bidirectional thumb pressure over the entire ...
Atmospheric properties include temperature, pressure, and humidity
Greenhouse gases absorb part of the outgoing IR radiation